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  • Just a quick note to thank you again and express my appreciation for all your help on this purchase. Your guys are great!
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    - Tim
  • I was kind of leery about shelling out that kind of money without knowing what kind customer service I would get. Not anymore! I now feel like I made a wise choice.
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  • John was excellent in answering all my questions and even talked at length about new products and fish related stuff. I really enjoyed doing business with this company!
    - Travis
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    - Nicole
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    - Michael
  • Thank you, John, for your prompt attention... I will definitely order from you guys again!
    - Jack
  • Tank is gorgeous. Whole family is loving it. Now we're spending our evenings watching it instead of TV!
    - Joan
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    - Pete
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    - Thai
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    - Janet
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    - Jimmy
  • The tank was delivered safe and sound. More over... the way it was packaged up for shipment was Excellent!
    - Darren
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  • Fish Tanks Direct is PHENOMENAL! Their customer service is hands down the best I’ve come across in 10 years of reef keeping.
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    - Rob
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    - Marlene
  • Just wanted to say thanks again for all you and your team did in assisting me with the fish tank. It looks great and I'm a very satisfied customer.
    - Scott
  • Thank you, John!!! Great customer service... give yourself a pat on the back!
    - Dary
  • Thank you sooo much for all your help. We love our new acrylic tank and setup. Everything is so much clearer and the color of the fish is much truer.
    - Jone H
500 ml Reef Basis Potassium Liquid by Continuum Aquatics

500 ml Reef Basis Potassium Liquid by Continuum Aquatics

Continuum Aquatics
Model #:
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Product Description

Reef•Basis Potassium is a high quality, maximum strength ionic potassium solution which is stronger than most competing products and designed to safely raise the potassium level in marine aquariums, providing essential potassium for increased growth rates in stony corals, and increased coloration. It contains no acetate, gluconates, polygluconates or other unnecessary organics to pollute your aquarium. It is phosphate and silicate free. May be used simultaneously with Kalkwasser.

Potassium is required for formation of aragonite in scleractinians and required for color pigmentation in many corals, particularly small polyped stonies of blue and purple hues. Potassium can be depleted through heavy animal population and may be lacking in economy salt mixes. Continuum recommends that you maintain a potassium level of between 380 and 405 mg/L (ppm), a calcium level of between 410 and 450 mg/L (ppm), an alkalinity level of 7 to 11 dKH (2.5 to 4 meq/L), and a magnesium level of 1250 to 1350 mg/L (ppm). Note: Aquarists keeping SPS corals should consider keeping alkalinity at 7 to no more than 9 dKH (2.5 to 3.21 meq/L). Do not add Reef•Basis Potassium to buffering (alkalinity) products.

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